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NH4Cl- NH3·H2O- H2O系仲钨酸铵溶解度研究 肖学有1,万林生2,王辉3,陈帮明1,石忠宁4 (1.崇义章源钨制品有限公司,江西崇义,341300;2.南方冶金学院材料与化工学院,江西赣州,341000;3.大余伟良钨业有限公司,江西大余,341500;4.东北大学材料与冶金学院,辽宁沈阳,110000) 摘要:采用测试和回归方程求极限的方法,研究了NH4Cl掺入下,5(NH4)2O@12WO3@5H2O的平衡溶解度.结果表明,当NH4Cl浓度为1mol/L,2mol/L,3mol/L时APT的溶解度分别为NH3@H2O-H2O系的1/2,1/3,1/4.NH4Cl浓度1.5mol/L后影响减弱.NH4Cl掺入下APT溶解度受温度的影响变小. 关键词:仲钨酸铵; NH4Cl-NH3·H2O-H2O系; 溶解度; [全文内容正在添加中] ......
α-Zr(HPO4)2·H2O·4E5A复合粉体的制备 陈运法1,邓平晔1,田亚峻1,张冬海1,李自强1 (1.中国科学院过程工程研究所,北京,100080) 摘要:α-磷酸锆与正丁胺(n-butylamine,BA),四乙烯五胺(4E5A)在去离子水中混合均匀,0~25℃下搅拌6 h,制得具有捕收甲醛功能的层状复合粉体α-ZrP-4E5A.研究了物料用量及反应条件对插层产物收率的影响,并对产物进行了分析,表征,结果表明α-磷酸锆插层产物热稳定性较好,对甲醛的捕收率较高. 关键词:α-磷酸锆; 插层; 甲醛捕收; [全文内容正在添加中] ......
, such as grain size, elastic modulus, plastic strain hardening exponent, initial yield stress, as well as twin lamellar distribution, which may contribute to size effects of twin layers in Cu polycrystalline. The results provide information to understand the mechanical behaviors of Cu with nano-scale growth twins. Key words: copper; twins; strain gradient plasticity; size effects, numerical simulation......
structure subjected to synergistic effects of blast and fragments TIAN Li1, 2, LI Wei1 (1. School of Civil Engineering, Tianjin University, Tianjin 300350, China; 2. Key Laboratory of Coast Civil... on the finite element software ANSYS/LS-DYNA. The damage-collapse and protection of RC frame structure subjected to the synergistic effects of blast and fragments were studied. Through the numerical simulation......
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were decomposed by HNO3 and H2SO4, and then analyzed by SF-ICP-MS. Most of the spectral interferences could be avoided by measuring in different mass resolution modes. The matrix effects due to the excess of sulfuric acid and Mn were evaluated. Correction of matrix effects was conducted by using the internal standard elements. The optimum condition for the determination was investigated......
[Nd(PW11O39)(H2O)3](H2bpy)2·4H2O的水热合成及晶体结构 李增和1,朱玉俊1,柳正文1 (1.北京化工大学,理学院,北京,100029) 摘要:采用水热法合成稀土无机有机杂化化合物[Nd(PW11O39)(H2O)3 ](H2bpy)2·4H2O.采用NdCl3·6H2O,(NH4)3PW12O40·3H2O, 4,4''-联吡啶(bpy),和去离子水(摩尔比为...[Nd(PW11O39)(H2O)3]4- 和有机的二质子化的4,4''-联吡啶(H2bpy)2+ 及结晶水分子堆积而成的, 是一个新的稀土磷钨酸盐无机有机杂化化合物. 关键词:无机-有机杂化材料; 稀土金属; 磷钨多氧酸盐; 联吡啶; 水热合成; 晶体结构; [全文内容正在添加中] ......
Partial Oxidation of Methane to Syngas over Monolithic Ni/γ-Al2O3 Catalyst--Effects of Rare Earths and Other Basic Promoters Gong Maochu1,Mei Dajiang1,Li Xuan1,Ma Di1,Chen Yaoqiang1 (1.College... of the catalyst were investigated. The results show that at a high space velocity of 1×105 h-1, optimal CH4 conversion can be obtained. Effects of promoters such as Na, Sr, Ce, La were also investigated......
Lattice Effects in La-Sm-Ca-Mn-O 刘宜华1,梅良模1,张汝贞1,栾开政1,岳龙强1,王成建1 (1.Department of Physics, Shandong University, Jinan 250100, China) Abstract:The doping effects of Sm in La0.67Ca0.33MnO3 oxide were... increases rapidly, the Curie temperature decreases monotonically, and the magneto-resistance ratio increases quickly. The effects of Sm doping can be explained in terms of lattice effects. Key words......
), the leaching concentration, phase and total leaching rate of trace elements were computed to analyze its leaching characteristics. The environmental effects of trace elements were assessed referred... effects 煤炭是我国重要的一次性能源,在我国能源结构中占有重要地位.煤矸石是煤炭开采,洗选加工过程中排出的固体废弃物,约占原煤产量的15%左右,是我国工业固体废弃物的最主要来源之一[1-3].淮南矿区是我国14亿t煤生产基地之一,煤矸石排放量巨大,排放的煤矸石大量堆积于矿区内[4-6].煤矸石的大量堆存不仅占用土地,同时也会对矿区生态环境造成严重影响,如煤矸石经过雨水淋溶会释放出环境敏感性微量元素......
